Cap for fountain pens



Aug. 17 1926..

' CAP FOR FOUNTAIN PBNS Original le larc 10. 1922 INVENTOR GEGRGE H.DOYLE, OF QUEENS VILLAGE, HEY? YORK, ASSIGNOB 0F ONE-HALE TO Fries.

anon-Gr. n. noenn'son, or nonrsvrnnn, new YORK.

CAP FQR FOUNTAIH PENS.

Application filed March 10, 19.22, Serial No. 542,670. Renewed January25, 1926;

This invention relates-to fountain pens, and more particularly to thecap therefor.'

An important object is to provide a fountain pen cap having novel meanswhereby to protect the nib of the pen during the filling thereof.

Further, an important object is to provide a. fountain pen cap which issimilar in we t-erior appearance to the usual fountain pen cap and whichmay be operatedjust as conveniently.

A further object is to provide a fountain pen cap of the class describedwhich is of highly simplified construction, durable in use and cheap tomanufacture.

Other objects and advantages of the in vention Wlll be apparent durlngthe courseoi,

the following description.

In the accompanying drawing forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a group perspectiveof the improved cap applied.

Figure 2 is a sectional view through the cap applied.

Figure 3 is a group view of the cap applied the outer section of the capbeing shown in section.

Figure 4 is a perspective of the inner section of the cap.

In the drawing wherein for the purpose of illustration is shown apreferred embodiment of the invention, the numeral 5 generallydesignates a pen stock having the usual bulb pressing device 6 by meansof which the air is expelled from the ink containing bulb when it isdesired to fill the pen, all of which is old and well-known.

The invention resides in the particular 'means for protecting the n1b 7durlng the filling of the pen and tothis end I provide a cap consistingof inner and outer associated sections 8 and 9, the inner section havingits rear portion enlarged to provide an attaching rim 10. As illustratedin Figure 2, the annular attaching member 10 is interiorly .crewthreaded for engagement with the threads 11 on the forward portion ofthe pen stock. The rear portion of the annular attaching member 10tapers to allne and flatly contacts with the reduced intermediateportion of the pen stock whereby to provide a smooth connection betweenthe cap thepee stock. The annular attaching means whereby the same maybe member 10 is knurled so as to provide a manually applied or removed.

The inner section 8 is as illustrated in Figure 3, exteriorly screwthreaded as indicated at 12 immediately in advance of the annularattaching member 10 whereby to n'ovide a means for connection with theouter cap. The outer section 9.is interiorly screw threaded as indicatedat 16 for eligagement with the exterior screw threads 11 and attentionis directed to the fact that the screw threads 12 and 16 are opposite tothose betw en the penstock and the attaching portion 10. In other wordsthe screw threads between the inner and outer sections may be left handwhile right hand screw threads are provided between the attachingportion 10 and the pen stock.

It will be seen that the rotation of the cap to the right'securelyfastens the inner section to the pen stock and at the same time removesthe outer section from engagement with the inner section therebyexposing the inner section.

Also, a turn to the left will remove the cap in its entirety. Forattaching the cap as an entirety it is gripping the annular attachingportion 16.

ihe forward portion of the inner section 8 is provided with oppositelyarranged transversely curved protecting lugs 20 which terminateinadvance of the. nib 7 and thereby protect the nib when inserted in ashallow receptacle for the permitting the pen to be tilled. Therefore,the nib is effectively protected and the life of the same isconsequently increased.

' As illustrated in Figures 2 and 3, one end of the section 9 is closedand is provided with an annular member 26 which flatly con tacts withthe forward end of the pen stool: so as to hold the cap firmly inposition. Also, the annular member 26 co-operates with the outer section9 in forming an annular recess for the reception of the lugs 20.

I claim 1. A fountain pen cap comprising inner and outer sections havingscrew threads whereby the same may be detachably connected, the rearportion of the inner section being enlarged to provide a stop shoulderand an annular attaching portion, the at taching portion being providedwith interior screw'threads opposite to the screw threads between theinner and outer sections,

and a nib protecting lug carried by the forward portion of the innersection, said shoulder constituting-a'means to limit the endwisemovement cit-said outer section on said inner section. V

2. A fountain pen cap comprising inner and outer sections having screwthreads whereby the same may be detachably connected, the rear portionof the inner section beingenlargcd to provide a stop shoulder and anannular attaching portion, the attaching portion being provided withinterior screw threads opposite to the screw threads between the innerand outer sections, and a pair of oppositely arranged forwardlyextending transversely curved lugs formed on the forward end of saidinner section and constituting nib protecting members- 8. Theconstruction set forth in claim 2. said outer cap being provided at oneend with an inwardly extending annular pen engaging member constitutingan annular recess for the reception of said lugs In testimony whereof lhave aliixed my signature.

GEORGE H. norm

